Police in Minneapolis, St. Louis Park and Woodbury are looking for two suspects they say have been skimming credit cards at the self-checkout registers of area grocery stores.

One of the card-skimming devices was found at a Lund's and Byerly's store, at 25 SE University Av., on Feb. 7 by store employees, who turned it over to a police officer who was working off-duty there, according to a police report. Store staff told the officer that similar devices had been discovered at other locations, including the Lunds and Byerly's at St. Louis Park and Woodbury, the report said.